Integrated Crop Management News

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Phytophthora root rot is a well-known disease to Iowa soybean growers. Although the disease has been under control, with no large-scale severe outbreaks, it continues to be a production concern and causes damage in scattered areas because of the development of new races. In the last 2 years, reports have increased for Phytophthora root rot from varieties with the Rps1k gene (or k-gene). Despite the relatively dry spring thus far, we have received reports of Phytophthora root rot on varieties with the Rps1k gene.

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Iowa State University



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